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  1.  
  2. /* pngconf.h - machine configurable file for libpng
  3.  *
  4.  * libpng version 1.2.37 - June 4, 2009
  5.  * For conditions of distribution and use, see copyright notice in png.h
  6.  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  7.  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  8.  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  9.  */
  10.  
  11. /* Any machine specific code is near the front of this file, so if you
  12.  * are configuring libpng for a machine, you may want to read the section
  13.  * starting here down to where it starts to typedef png_color, png_text,
  14.  * and png_info.
  15.  */
  16.  
  17. #ifndef PNGCONF_H
  18. #define PNGCONF_H
  19.  
  20. #define PNG_1_2_X
  21.  
  22. /*
  23.  * PNG_USER_CONFIG has to be defined on the compiler command line. This
  24.  * includes the resource compiler for Windows DLL configurations.
  25.  */
  26. #ifdef PNG_USER_CONFIG
  27. #  ifndef PNG_USER_PRIVATEBUILD
  28. #    define PNG_USER_PRIVATEBUILD
  29. #  endif
  30. #include "pngusr.h"
  31. #endif
  32.  
  33. /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
  34. #ifdef PNG_CONFIGURE_LIBPNG
  35. #ifdef HAVE_CONFIG_H
  36. #include "config.h"
  37. #endif
  38. #endif
  39.  
  40. /*
  41.  * Added at libpng-1.2.8
  42.  *  
  43.  * If you create a private DLL you need to define in "pngusr.h" the followings:
  44.  * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
  45.  *        the DLL was built>
  46.  *  e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
  47.  * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
  48.  *        distinguish your DLL from those of the official release. These
  49.  *        correspond to the trailing letters that come after the version
  50.  *        number and must match your private DLL name>
  51.  *  e.g. // private DLL "libpng13gx.dll"
  52.  *       #define PNG_USER_DLLFNAME_POSTFIX "gx"
  53.  *
  54.  * The following macros are also at your disposal if you want to complete the
  55.  * DLL VERSIONINFO structure.
  56.  * - PNG_USER_VERSIONINFO_COMMENTS
  57.  * - PNG_USER_VERSIONINFO_COMPANYNAME
  58.  * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
  59.  */
  60.  
  61. #ifdef __STDC__
  62. #ifdef SPECIALBUILD
  63. #  pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
  64.  are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
  65. #endif
  66.  
  67. #ifdef PRIVATEBUILD
  68. # pragma message("PRIVATEBUILD is deprecated.\
  69.  Use PNG_USER_PRIVATEBUILD instead.")
  70. # define PNG_USER_PRIVATEBUILD PRIVATEBUILD
  71. #endif
  72. #endif /* __STDC__ */
  73.  
  74. #ifndef PNG_VERSION_INFO_ONLY
  75.  
  76. /* End of material added to libpng-1.2.8 */
  77.  
  78. /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
  79.    Restored at libpng-1.2.21 */
  80. #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
  81.     !defined(PNG_WARN_UNINITIALIZED_ROW)
  82. #  define PNG_WARN_UNINITIALIZED_ROW 1
  83. #endif
  84. /* End of material added at libpng-1.2.19/1.2.21 */
  85.  
  86. /* This is the size of the compression buffer, and thus the size of
  87.  * an IDAT chunk.  Make this whatever size you feel is best for your
  88.  * machine.  One of these will be allocated per png_struct.  When this
  89.  * is full, it writes the data to the disk, and does some other
  90.  * calculations.  Making this an extremely small size will slow
  91.  * the library down, but you may want to experiment to determine
  92.  * where it becomes significant, if you are concerned with memory
  93.  * usage.  Note that zlib allocates at least 32Kb also.  For readers,
  94.  * this describes the size of the buffer available to read the data in.
  95.  * Unless this gets smaller than the size of a row (compressed),
  96.  * it should not make much difference how big this is.
  97.  */
  98.  
  99. #ifndef PNG_ZBUF_SIZE
  100. #  define PNG_ZBUF_SIZE 8192
  101. #endif
  102.  
  103. /* Enable if you want a write-only libpng */
  104.  
  105. #ifndef PNG_NO_READ_SUPPORTED
  106. #  define PNG_READ_SUPPORTED
  107. #endif
  108.  
  109. /* Enable if you want a read-only libpng */
  110.  
  111. #ifndef PNG_NO_WRITE_SUPPORTED
  112. #  define PNG_WRITE_SUPPORTED
  113. #endif
  114.  
  115. /* Enabled by default in 1.2.0.  You can disable this if you don't need to
  116.    support PNGs that are embedded in MNG datastreams */
  117. #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
  118. #  ifndef PNG_MNG_FEATURES_SUPPORTED
  119. #    define PNG_MNG_FEATURES_SUPPORTED
  120. #  endif
  121. #endif
  122.  
  123. #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
  124. #  ifndef PNG_FLOATING_POINT_SUPPORTED
  125. #    define PNG_FLOATING_POINT_SUPPORTED
  126. #  endif
  127. #endif
  128.  
  129. /* If you are running on a machine where you cannot allocate more
  130.  * than 64K of memory at once, uncomment this.  While libpng will not
  131.  * normally need that much memory in a chunk (unless you load up a very
  132.  * large file), zlib needs to know how big of a chunk it can use, and
  133.  * libpng thus makes sure to check any memory allocation to verify it
  134.  * will fit into memory.
  135. #define PNG_MAX_MALLOC_64K
  136.  */
  137. #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
  138. #  define PNG_MAX_MALLOC_64K
  139. #endif
  140.  
  141. /* Special munging to support doing things the 'cygwin' way:
  142.  * 'Normal' png-on-win32 defines/defaults:
  143.  *   PNG_BUILD_DLL -- building dll
  144.  *   PNG_USE_DLL   -- building an application, linking to dll
  145.  *   (no define)   -- building static library, or building an
  146.  *                    application and linking to the static lib
  147.  * 'Cygwin' defines/defaults:
  148.  *   PNG_BUILD_DLL -- (ignored) building the dll
  149.  *   (no define)   -- (ignored) building an application, linking to the dll
  150.  *   PNG_STATIC    -- (ignored) building the static lib, or building an
  151.  *                    application that links to the static lib.
  152.  *   ALL_STATIC    -- (ignored) building various static libs, or building an
  153.  *                    application that links to the static libs.
  154.  * Thus,
  155.  * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
  156.  * this bit of #ifdefs will define the 'correct' config variables based on
  157.  * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
  158.  * unnecessary.
  159.  *
  160.  * Also, the precedence order is:
  161.  *   ALL_STATIC (since we can't #undef something outside our namespace)
  162.  *   PNG_BUILD_DLL
  163.  *   PNG_STATIC
  164.  *   (nothing) == PNG_USE_DLL
  165.  *
  166.  * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
  167.  *   of auto-import in binutils, we no longer need to worry about
  168.  *   __declspec(dllexport) / __declspec(dllimport) and friends.  Therefore,
  169.  *   we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
  170.  *   to __declspec() stuff.  However, we DO need to worry about
  171.  *   PNG_BUILD_DLL and PNG_STATIC because those change some defaults
  172.  *   such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
  173.  */
  174. #if defined(__CYGWIN__)
  175. #  if defined(ALL_STATIC)
  176. #    if defined(PNG_BUILD_DLL)
  177. #      undef PNG_BUILD_DLL
  178. #    endif
  179. #    if defined(PNG_USE_DLL)
  180. #      undef PNG_USE_DLL
  181. #    endif
  182. #    if defined(PNG_DLL)
  183. #      undef PNG_DLL
  184. #    endif
  185. #    if !defined(PNG_STATIC)
  186. #      define PNG_STATIC
  187. #    endif
  188. #  else
  189. #    if defined (PNG_BUILD_DLL)
  190. #      if defined(PNG_STATIC)
  191. #        undef PNG_STATIC
  192. #      endif
  193. #      if defined(PNG_USE_DLL)
  194. #        undef PNG_USE_DLL
  195. #      endif
  196. #      if !defined(PNG_DLL)
  197. #        define PNG_DLL
  198. #      endif
  199. #    else
  200. #      if defined(PNG_STATIC)
  201. #        if defined(PNG_USE_DLL)
  202. #          undef PNG_USE_DLL
  203. #        endif
  204. #        if defined(PNG_DLL)
  205. #          undef PNG_DLL
  206. #        endif
  207. #      else
  208. #        if !defined(PNG_USE_DLL)
  209. #          define PNG_USE_DLL
  210. #        endif
  211. #        if !defined(PNG_DLL)
  212. #          define PNG_DLL
  213. #        endif
  214. #      endif  
  215. #    endif  
  216. #  endif
  217. #endif
  218.  
  219. /* This protects us against compilers that run on a windowing system
  220.  * and thus don't have or would rather us not use the stdio types:
  221.  * stdin, stdout, and stderr.  The only one currently used is stderr
  222.  * in png_error() and png_warning().  #defining PNG_NO_CONSOLE_IO will
  223.  * prevent these from being compiled and used. #defining PNG_NO_STDIO
  224.  * will also prevent these, plus will prevent the entire set of stdio
  225.  * macros and functions (FILE *, printf, etc.) from being compiled and used,
  226.  * unless (PNG_DEBUG > 0) has been #defined.
  227.  *
  228.  * #define PNG_NO_CONSOLE_IO
  229.  * #define PNG_NO_STDIO
  230.  */
  231.  
  232. #if defined(_WIN32_WCE)
  233. #  include <windows.h>
  234.    /* Console I/O functions are not supported on WindowsCE */
  235. #  define PNG_NO_CONSOLE_IO
  236.    /* abort() may not be supported on some/all Windows CE platforms */
  237. #  define PNG_ABORT() exit(-1)
  238. #  ifdef PNG_DEBUG
  239. #    undef PNG_DEBUG
  240. #  endif
  241. #endif
  242.  
  243. #ifdef PNG_BUILD_DLL
  244. #  ifndef PNG_CONSOLE_IO_SUPPORTED
  245. #    ifndef PNG_NO_CONSOLE_IO
  246. #      define PNG_NO_CONSOLE_IO
  247. #    endif
  248. #  endif
  249. #endif
  250.  
  251. #  ifdef PNG_NO_STDIO
  252. #    ifndef PNG_NO_CONSOLE_IO
  253. #      define PNG_NO_CONSOLE_IO
  254. #    endif
  255. #    ifdef PNG_DEBUG
  256. #      if (PNG_DEBUG > 0)
  257. #        include <stdio.h>
  258. #      endif
  259. #    endif
  260. #  else
  261. #    if !defined(_WIN32_WCE)
  262. /* "stdio.h" functions are not supported on WindowsCE */
  263. #      include <stdio.h>
  264. #    endif
  265. #  endif
  266.  
  267. /* This macro protects us against machines that don't have function
  268.  * prototypes (ie K&R style headers).  If your compiler does not handle
  269.  * function prototypes, define this macro and use the included ansi2knr.
  270.  * I've always been able to use _NO_PROTO as the indicator, but you may
  271.  * need to drag the empty declaration out in front of here, or change the
  272.  * ifdef to suit your own needs.
  273.  */
  274. #ifndef PNGARG
  275.  
  276. #ifdef OF /* zlib prototype munger */
  277. #  define PNGARG(arglist) OF(arglist)
  278. #else
  279.  
  280. #ifdef _NO_PROTO
  281. #  define PNGARG(arglist) ()
  282. #  ifndef PNG_TYPECAST_NULL
  283. #     define PNG_TYPECAST_NULL
  284. #  endif
  285. #else
  286. #  define PNGARG(arglist) arglist
  287. #endif /* _NO_PROTO */
  288.  
  289.  
  290. #endif /* OF */
  291.  
  292. #endif /* PNGARG */
  293.  
  294. /* Try to determine if we are compiling on a Mac.  Note that testing for
  295.  * just __MWERKS__ is not good enough, because the Codewarrior is now used
  296.  * on non-Mac platforms.
  297.  */
  298. #ifndef MACOS
  299. #  if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
  300.       defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
  301. #    define MACOS
  302. #  endif
  303. #endif
  304.  
  305. /* enough people need this for various reasons to include it here */
  306. #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
  307. #  include <sys/types.h>
  308. #endif
  309.  
  310. #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
  311. #  define PNG_SETJMP_SUPPORTED
  312. #endif
  313.  
  314. #ifdef PNG_SETJMP_SUPPORTED
  315. /* This is an attempt to force a single setjmp behaviour on Linux.  If
  316.  * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
  317.  *
  318.  * You can bypass this test if you know that your application uses exactly
  319.  * the same setjmp.h that was included when libpng was built.  Only define
  320.  * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
  321.  * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
  322.  * while building a separate libpng library for general use.
  323.  */
  324.  
  325. #  ifndef PNG_SKIP_SETJMP_CHECK
  326. #    ifdef __linux__
  327. #      ifdef _BSD_SOURCE
  328. #        define PNG_SAVE_BSD_SOURCE
  329. #        undef _BSD_SOURCE
  330. #      endif
  331. #      ifdef _SETJMP_H
  332.        /* If you encounter a compiler error here, see the explanation
  333.         * near the end of INSTALL.
  334.         */
  335.            __pngconf.h__ in libpng already includes setjmp.h;
  336.            __dont__ include it again.;
  337. #      endif
  338. #    endif /* __linux__ */
  339. #  endif /* PNG_SKIP_SETJMP_CHECK */
  340.  
  341.    /* include setjmp.h for error handling */
  342. #  include <setjmp.h>
  343.  
  344. #  ifdef __linux__
  345. #    ifdef PNG_SAVE_BSD_SOURCE
  346. #      ifndef _BSD_SOURCE
  347. #        define _BSD_SOURCE
  348. #      endif
  349. #      undef PNG_SAVE_BSD_SOURCE
  350. #    endif
  351. #  endif /* __linux__ */
  352. #endif /* PNG_SETJMP_SUPPORTED */
  353.  
  354. #ifdef BSD
  355. #  include <strings.h>
  356. #else
  357. #  include <string.h>
  358. #endif
  359.  
  360. /* Other defines for things like memory and the like can go here.  */
  361. #ifdef PNG_INTERNAL
  362.  
  363. #include <stdlib.h>
  364.  
  365. /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
  366.  * aren't usually used outside the library (as far as I know), so it is
  367.  * debatable if they should be exported at all.  In the future, when it is
  368.  * possible to have run-time registry of chunk-handling functions, some of
  369.  * these will be made available again.
  370. #define PNG_EXTERN extern
  371.  */
  372. #define PNG_EXTERN
  373.  
  374. /* Other defines specific to compilers can go here.  Try to keep
  375.  * them inside an appropriate ifdef/endif pair for portability.
  376.  */
  377.  
  378. #if defined(PNG_FLOATING_POINT_SUPPORTED)
  379. #  if defined(MACOS)
  380.      /* We need to check that <math.h> hasn't already been included earlier
  381.       * as it seems it doesn't agree with <fp.h>, yet we should really use
  382.       * <fp.h> if possible.
  383.       */
  384. #    if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
  385. #      include <fp.h>
  386. #    endif
  387. #  else
  388. #    include <math.h>
  389. #  endif
  390. #  if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
  391.      /* Amiga SAS/C: We must include builtin FPU functions when compiling using
  392.       * MATH=68881
  393.       */
  394. #    include <m68881.h>
  395. #  endif
  396. #endif
  397.  
  398. /* Codewarrior on NT has linking problems without this. */
  399. #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
  400. #  define PNG_ALWAYS_EXTERN
  401. #endif
  402.  
  403. /* This provides the non-ANSI (far) memory allocation routines. */
  404. #if defined(__TURBOC__) && defined(__MSDOS__)
  405. #  include <mem.h>
  406. #  include <alloc.h>
  407. #endif
  408.  
  409. /* I have no idea why is this necessary... */
  410. #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
  411.     defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
  412. #  include <malloc.h>
  413. #endif
  414.  
  415. /* This controls how fine the dithering gets.  As this allocates
  416.  * a largish chunk of memory (32K), those who are not as concerned
  417.  * with dithering quality can decrease some or all of these.
  418.  */
  419. #ifndef PNG_DITHER_RED_BITS
  420. #  define PNG_DITHER_RED_BITS 5
  421. #endif
  422. #ifndef PNG_DITHER_GREEN_BITS
  423. #  define PNG_DITHER_GREEN_BITS 5
  424. #endif
  425. #ifndef PNG_DITHER_BLUE_BITS
  426. #  define PNG_DITHER_BLUE_BITS 5
  427. #endif
  428.  
  429. /* This controls how fine the gamma correction becomes when you
  430.  * are only interested in 8 bits anyway.  Increasing this value
  431.  * results in more memory being used, and more pow() functions
  432.  * being called to fill in the gamma tables.  Don't set this value
  433.  * less then 8, and even that may not work (I haven't tested it).
  434.  */
  435.  
  436. #ifndef PNG_MAX_GAMMA_8
  437. #  define PNG_MAX_GAMMA_8 11
  438. #endif
  439.  
  440. /* This controls how much a difference in gamma we can tolerate before
  441.  * we actually start doing gamma conversion.
  442.  */
  443. #ifndef PNG_GAMMA_THRESHOLD
  444. #  define PNG_GAMMA_THRESHOLD 0.05
  445. #endif
  446.  
  447. #endif /* PNG_INTERNAL */
  448.  
  449. /* The following uses const char * instead of char * for error
  450.  * and warning message functions, so some compilers won't complain.
  451.  * If you do not want to use const, define PNG_NO_CONST here.
  452.  */
  453.  
  454. #ifndef PNG_NO_CONST
  455. #  define PNG_CONST const
  456. #else
  457. #  define PNG_CONST
  458. #endif
  459.  
  460. /* The following defines give you the ability to remove code from the
  461.  * library that you will not be using.  I wish I could figure out how to
  462.  * automate this, but I can't do that without making it seriously hard
  463.  * on the users.  So if you are not using an ability, change the #define
  464.  * to and #undef, and that part of the library will not be compiled.  If
  465.  * your linker can't find a function, you may want to make sure the
  466.  * ability is defined here.  Some of these depend upon some others being
  467.  * defined.  I haven't figured out all the interactions here, so you may
  468.  * have to experiment awhile to get everything to compile.  If you are
  469.  * creating or using a shared library, you probably shouldn't touch this,
  470.  * as it will affect the size of the structures, and this will cause bad
  471.  * things to happen if the library and/or application ever change.
  472.  */
  473.  
  474. /* Any features you will not be using can be undef'ed here */
  475.  
  476. /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
  477.  * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
  478.  * on the compile line, then pick and choose which ones to define without
  479.  * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
  480.  * if you only want to have a png-compliant reader/writer but don't need
  481.  * any of the extra transformations.  This saves about 80 kbytes in a
  482.  * typical installation of the library. (PNG_NO_* form added in version
  483.  * 1.0.1c, for consistency)
  484.  */
  485.  
  486. /* The size of the png_text structure changed in libpng-1.0.6 when
  487.  * iTXt support was added.  iTXt support was turned off by default through
  488.  * libpng-1.2.x, to support old apps that malloc the png_text structure
  489.  * instead of calling png_set_text() and letting libpng malloc it.  It
  490.  * was turned on by default in libpng-1.3.0.
  491.  */
  492.  
  493. #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
  494. #  ifndef PNG_NO_iTXt_SUPPORTED
  495. #    define PNG_NO_iTXt_SUPPORTED
  496. #  endif
  497. #  ifndef PNG_NO_READ_iTXt
  498. #    define PNG_NO_READ_iTXt
  499. #  endif
  500. #  ifndef PNG_NO_WRITE_iTXt
  501. #    define PNG_NO_WRITE_iTXt
  502. #  endif
  503. #endif
  504.  
  505. #if !defined(PNG_NO_iTXt_SUPPORTED)
  506. #  if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
  507. #    define PNG_READ_iTXt
  508. #  endif
  509. #  if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
  510. #    define PNG_WRITE_iTXt
  511. #  endif
  512. #endif
  513.  
  514. /* The following support, added after version 1.0.0, can be turned off here en
  515.  * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
  516.  * with old applications that require the length of png_struct and png_info
  517.  * to remain unchanged.
  518.  */
  519.  
  520. #ifdef PNG_LEGACY_SUPPORTED
  521. #  define PNG_NO_FREE_ME
  522. #  define PNG_NO_READ_UNKNOWN_CHUNKS
  523. #  define PNG_NO_WRITE_UNKNOWN_CHUNKS
  524. #  define PNG_NO_READ_USER_CHUNKS
  525. #  define PNG_NO_READ_iCCP
  526. #  define PNG_NO_WRITE_iCCP
  527. #  define PNG_NO_READ_iTXt
  528. #  define PNG_NO_WRITE_iTXt
  529. #  define PNG_NO_READ_sCAL
  530. #  define PNG_NO_WRITE_sCAL
  531. #  define PNG_NO_READ_sPLT
  532. #  define PNG_NO_WRITE_sPLT
  533. #  define PNG_NO_INFO_IMAGE
  534. #  define PNG_NO_READ_RGB_TO_GRAY
  535. #  define PNG_NO_READ_USER_TRANSFORM
  536. #  define PNG_NO_WRITE_USER_TRANSFORM
  537. #  define PNG_NO_USER_MEM
  538. #  define PNG_NO_READ_EMPTY_PLTE
  539. #  define PNG_NO_MNG_FEATURES
  540. #  define PNG_NO_FIXED_POINT_SUPPORTED
  541. #endif
  542.  
  543. /* Ignore attempt to turn off both floating and fixed point support */
  544. #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
  545.     !defined(PNG_NO_FIXED_POINT_SUPPORTED)
  546. #  define PNG_FIXED_POINT_SUPPORTED
  547. #endif
  548.  
  549. #ifndef PNG_NO_FREE_ME
  550. #  define PNG_FREE_ME_SUPPORTED
  551. #endif
  552.  
  553. #if defined(PNG_READ_SUPPORTED)
  554.  
  555. #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
  556.       !defined(PNG_NO_READ_TRANSFORMS)
  557. #  define PNG_READ_TRANSFORMS_SUPPORTED
  558. #endif
  559.  
  560. #ifdef PNG_READ_TRANSFORMS_SUPPORTED
  561. #  ifndef PNG_NO_READ_EXPAND
  562. #    define PNG_READ_EXPAND_SUPPORTED
  563. #  endif
  564. #  ifndef PNG_NO_READ_SHIFT
  565. #    define PNG_READ_SHIFT_SUPPORTED
  566. #  endif
  567. #  ifndef PNG_NO_READ_PACK
  568. #    define PNG_READ_PACK_SUPPORTED
  569. #  endif
  570. #  ifndef PNG_NO_READ_BGR
  571. #    define PNG_READ_BGR_SUPPORTED
  572. #  endif
  573. #  ifndef PNG_NO_READ_SWAP
  574. #    define PNG_READ_SWAP_SUPPORTED
  575. #  endif
  576. #  ifndef PNG_NO_READ_PACKSWAP
  577. #    define PNG_READ_PACKSWAP_SUPPORTED
  578. #  endif
  579. #  ifndef PNG_NO_READ_INVERT
  580. #    define PNG_READ_INVERT_SUPPORTED
  581. #  endif
  582. #  ifndef PNG_NO_READ_DITHER
  583. #    define PNG_READ_DITHER_SUPPORTED
  584. #  endif
  585. #  ifndef PNG_NO_READ_BACKGROUND
  586. #    define PNG_READ_BACKGROUND_SUPPORTED
  587. #  endif
  588. #  ifndef PNG_NO_READ_16_TO_8
  589. #    define PNG_READ_16_TO_8_SUPPORTED
  590. #  endif
  591. #  ifndef PNG_NO_READ_FILLER
  592. #    define PNG_READ_FILLER_SUPPORTED
  593. #  endif
  594. #  ifndef PNG_NO_READ_GAMMA
  595. #    define PNG_READ_GAMMA_SUPPORTED
  596. #  endif
  597. #  ifndef PNG_NO_READ_GRAY_TO_RGB
  598. #    define PNG_READ_GRAY_TO_RGB_SUPPORTED
  599. #  endif
  600. #  ifndef PNG_NO_READ_SWAP_ALPHA
  601. #    define PNG_READ_SWAP_ALPHA_SUPPORTED
  602. #  endif
  603. #  ifndef PNG_NO_READ_INVERT_ALPHA
  604. #    define PNG_READ_INVERT_ALPHA_SUPPORTED
  605. #  endif
  606. #  ifndef PNG_NO_READ_STRIP_ALPHA
  607. #    define PNG_READ_STRIP_ALPHA_SUPPORTED
  608. #  endif
  609. #  ifndef PNG_NO_READ_USER_TRANSFORM
  610. #    define PNG_READ_USER_TRANSFORM_SUPPORTED
  611. #  endif
  612. #  ifndef PNG_NO_READ_RGB_TO_GRAY
  613. #    define PNG_READ_RGB_TO_GRAY_SUPPORTED
  614. #  endif
  615. #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
  616.  
  617. #if !defined(PNG_NO_PROGRESSIVE_READ) && \
  618.  !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive   */
  619. #  define PNG_PROGRESSIVE_READ_SUPPORTED  /* reading.  This is not talking */
  620. #endif                            /* about interlacing capability!  You'll */
  621.            /* still have interlacing unless you change the following line: */
  622.  
  623. #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
  624.  
  625. #ifndef PNG_NO_READ_COMPOSITE_NODIV
  626. #  ifndef PNG_NO_READ_COMPOSITED_NODIV  /* libpng-1.0.x misspelling */
  627. #    define PNG_READ_COMPOSITE_NODIV_SUPPORTED  /* well tested on Intel, SGI */
  628. #  endif
  629. #endif
  630.  
  631. #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
  632. /* Deprecated, will be removed from version 2.0.0.
  633.    Use PNG_MNG_FEATURES_SUPPORTED instead. */
  634. #ifndef PNG_NO_READ_EMPTY_PLTE
  635. #  define PNG_READ_EMPTY_PLTE_SUPPORTED
  636. #endif
  637. #endif
  638.  
  639. #endif /* PNG_READ_SUPPORTED */
  640.  
  641. #if defined(PNG_WRITE_SUPPORTED)
  642.  
  643. # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
  644.     !defined(PNG_NO_WRITE_TRANSFORMS)
  645. #  define PNG_WRITE_TRANSFORMS_SUPPORTED
  646. #endif
  647.  
  648. #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
  649. #  ifndef PNG_NO_WRITE_SHIFT
  650. #    define PNG_WRITE_SHIFT_SUPPORTED
  651. #  endif
  652. #  ifndef PNG_NO_WRITE_PACK
  653. #    define PNG_WRITE_PACK_SUPPORTED
  654. #  endif
  655. #  ifndef PNG_NO_WRITE_BGR
  656. #    define PNG_WRITE_BGR_SUPPORTED
  657. #  endif
  658. #  ifndef PNG_NO_WRITE_SWAP
  659. #    define PNG_WRITE_SWAP_SUPPORTED
  660. #  endif
  661. #  ifndef PNG_NO_WRITE_PACKSWAP
  662. #    define PNG_WRITE_PACKSWAP_SUPPORTED
  663. #  endif
  664. #  ifndef PNG_NO_WRITE_INVERT
  665. #    define PNG_WRITE_INVERT_SUPPORTED
  666. #  endif
  667. #  ifndef PNG_NO_WRITE_FILLER
  668. #    define PNG_WRITE_FILLER_SUPPORTED   /* same as WRITE_STRIP_ALPHA */
  669. #  endif
  670. #  ifndef PNG_NO_WRITE_SWAP_ALPHA
  671. #    define PNG_WRITE_SWAP_ALPHA_SUPPORTED
  672. #  endif
  673. #  ifndef PNG_NO_WRITE_INVERT_ALPHA
  674. #    define PNG_WRITE_INVERT_ALPHA_SUPPORTED
  675. #  endif
  676. #  ifndef PNG_NO_WRITE_USER_TRANSFORM
  677. #    define PNG_WRITE_USER_TRANSFORM_SUPPORTED
  678. #  endif
  679. #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
  680.  
  681. #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
  682.     !defined(PNG_WRITE_INTERLACING_SUPPORTED)
  683. #define PNG_WRITE_INTERLACING_SUPPORTED  /* not required for PNG-compliant
  684.                                             encoders, but can cause trouble
  685.                                             if left undefined */
  686. #endif
  687.  
  688. #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
  689.     !defined(PNG_WRITE_WEIGHTED_FILTER) && \
  690.      defined(PNG_FLOATING_POINT_SUPPORTED)
  691. #  define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
  692. #endif
  693.  
  694. #ifndef PNG_NO_WRITE_FLUSH
  695. #  define PNG_WRITE_FLUSH_SUPPORTED
  696. #endif
  697.  
  698. #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
  699. /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
  700. #ifndef PNG_NO_WRITE_EMPTY_PLTE
  701. #  define PNG_WRITE_EMPTY_PLTE_SUPPORTED
  702. #endif
  703. #endif
  704.  
  705. #endif /* PNG_WRITE_SUPPORTED */
  706.  
  707. #ifndef PNG_1_0_X
  708. #  ifndef PNG_NO_ERROR_NUMBERS
  709. #    define PNG_ERROR_NUMBERS_SUPPORTED
  710. #  endif
  711. #endif /* PNG_1_0_X */
  712.  
  713. #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
  714.     defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
  715. #  ifndef PNG_NO_USER_TRANSFORM_PTR
  716. #    define PNG_USER_TRANSFORM_PTR_SUPPORTED
  717. #  endif
  718. #endif
  719.  
  720. #ifndef PNG_NO_STDIO
  721. #  define PNG_TIME_RFC1123_SUPPORTED
  722. #endif
  723.  
  724. /* This adds extra functions in pngget.c for accessing data from the
  725.  * info pointer (added in version 0.99)
  726.  * png_get_image_width()
  727.  * png_get_image_height()
  728.  * png_get_bit_depth()
  729.  * png_get_color_type()
  730.  * png_get_compression_type()
  731.  * png_get_filter_type()
  732.  * png_get_interlace_type()
  733.  * png_get_pixel_aspect_ratio()
  734.  * png_get_pixels_per_meter()
  735.  * png_get_x_offset_pixels()
  736.  * png_get_y_offset_pixels()
  737.  * png_get_x_offset_microns()
  738.  * png_get_y_offset_microns()
  739.  */
  740. #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
  741. #  define PNG_EASY_ACCESS_SUPPORTED
  742. #endif
  743.  
  744. /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
  745.  * and removed from version 1.2.20.  The following will be removed
  746.  * from libpng-1.4.0
  747. */
  748.  
  749. #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
  750. #  ifndef PNG_OPTIMIZED_CODE_SUPPORTED
  751. #    define PNG_OPTIMIZED_CODE_SUPPORTED
  752. #  endif
  753. #endif
  754.  
  755. #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
  756. #  ifndef PNG_ASSEMBLER_CODE_SUPPORTED
  757. #    define PNG_ASSEMBLER_CODE_SUPPORTED
  758. #  endif
  759.  
  760. #  if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
  761.      /* work around 64-bit gcc compiler bugs in gcc-3.x */
  762. #    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
  763. #      define PNG_NO_MMX_CODE
  764. #    endif
  765. #  endif
  766.  
  767. #  if defined(__APPLE__)
  768. #    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
  769. #      define PNG_NO_MMX_CODE
  770. #    endif
  771. #  endif
  772.  
  773. #  if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
  774. #    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
  775. #      define PNG_NO_MMX_CODE
  776. #    endif
  777. #  endif
  778.  
  779. #  if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
  780. #    define PNG_MMX_CODE_SUPPORTED
  781. #  endif
  782.  
  783. #endif
  784. /* end of obsolete code to be removed from libpng-1.4.0 */
  785.  
  786. #if !defined(PNG_1_0_X)
  787. #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
  788. #  define PNG_USER_MEM_SUPPORTED
  789. #endif
  790. #endif /* PNG_1_0_X */
  791.  
  792. /* Added at libpng-1.2.6 */
  793. #if !defined(PNG_1_0_X)
  794. #ifndef PNG_SET_USER_LIMITS_SUPPORTED
  795. #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
  796. #  define PNG_SET_USER_LIMITS_SUPPORTED
  797. #endif
  798. #endif
  799. #endif /* PNG_1_0_X */
  800.  
  801. /* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGS no matter
  802.  * how large, set these limits to 0x7fffffffL
  803.  */
  804. #ifndef PNG_USER_WIDTH_MAX
  805. #  define PNG_USER_WIDTH_MAX 1000000L
  806. #endif
  807. #ifndef PNG_USER_HEIGHT_MAX
  808. #  define PNG_USER_HEIGHT_MAX 1000000L
  809. #endif
  810.  
  811. /* Added at libpng-1.2.34 and 1.4.0 */
  812. #ifndef PNG_STRING_NEWLINE
  813. #define PNG_STRING_NEWLINE "\n"
  814. #endif
  815.  
  816. /* These are currently experimental features, define them if you want */
  817.  
  818. /* very little testing */
  819. /*
  820. #ifdef PNG_READ_SUPPORTED
  821. #  ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
  822. #    define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
  823. #  endif
  824. #endif
  825. */
  826.  
  827. /* This is only for PowerPC big-endian and 680x0 systems */
  828. /* some testing */
  829. /*
  830. #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
  831. #  define PNG_READ_BIG_ENDIAN_SUPPORTED
  832. #endif
  833. */
  834.  
  835. /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
  836. /*
  837. #define PNG_NO_POINTER_INDEXING
  838. */
  839.  
  840. /* These functions are turned off by default, as they will be phased out. */
  841. /*
  842. #define  PNG_USELESS_TESTS_SUPPORTED
  843. #define  PNG_CORRECT_PALETTE_SUPPORTED
  844. */
  845.  
  846. /* Any chunks you are not interested in, you can undef here.  The
  847.  * ones that allocate memory may be expecially important (hIST,
  848.  * tEXt, zTXt, tRNS, pCAL).  Others will just save time and make png_info
  849.  * a bit smaller.
  850.  */
  851.  
  852. #if defined(PNG_READ_SUPPORTED) && \
  853.     !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
  854.     !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
  855. #  define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
  856. #endif
  857.  
  858. #if defined(PNG_WRITE_SUPPORTED) && \
  859.     !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
  860.     !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
  861. #  define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
  862. #endif
  863.  
  864. #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
  865.  
  866. #ifdef PNG_NO_READ_TEXT
  867. #  define PNG_NO_READ_iTXt
  868. #  define PNG_NO_READ_tEXt
  869. #  define PNG_NO_READ_zTXt
  870. #endif
  871. #ifndef PNG_NO_READ_bKGD
  872. #  define PNG_READ_bKGD_SUPPORTED
  873. #  define PNG_bKGD_SUPPORTED
  874. #endif
  875. #ifndef PNG_NO_READ_cHRM
  876. #  define PNG_READ_cHRM_SUPPORTED
  877. #  define PNG_cHRM_SUPPORTED
  878. #endif
  879. #ifndef PNG_NO_READ_gAMA
  880. #  define PNG_READ_gAMA_SUPPORTED
  881. #  define PNG_gAMA_SUPPORTED
  882. #endif
  883. #ifndef PNG_NO_READ_hIST
  884. #  define PNG_READ_hIST_SUPPORTED
  885. #  define PNG_hIST_SUPPORTED
  886. #endif
  887. #ifndef PNG_NO_READ_iCCP
  888. #  define PNG_READ_iCCP_SUPPORTED
  889. #  define PNG_iCCP_SUPPORTED
  890. #endif
  891. #ifndef PNG_NO_READ_iTXt
  892. #  ifndef PNG_READ_iTXt_SUPPORTED
  893. #    define PNG_READ_iTXt_SUPPORTED
  894. #  endif
  895. #  ifndef PNG_iTXt_SUPPORTED
  896. #    define PNG_iTXt_SUPPORTED
  897. #  endif
  898. #endif
  899. #ifndef PNG_NO_READ_oFFs
  900. #  define PNG_READ_oFFs_SUPPORTED
  901. #  define PNG_oFFs_SUPPORTED
  902. #endif
  903. #ifndef PNG_NO_READ_pCAL
  904. #  define PNG_READ_pCAL_SUPPORTED
  905. #  define PNG_pCAL_SUPPORTED
  906. #endif
  907. #ifndef PNG_NO_READ_sCAL
  908. #  define PNG_READ_sCAL_SUPPORTED
  909. #  define PNG_sCAL_SUPPORTED
  910. #endif
  911. #ifndef PNG_NO_READ_pHYs
  912. #  define PNG_READ_pHYs_SUPPORTED
  913. #  define PNG_pHYs_SUPPORTED
  914. #endif
  915. #ifndef PNG_NO_READ_sBIT
  916. #  define PNG_READ_sBIT_SUPPORTED
  917. #  define PNG_sBIT_SUPPORTED
  918. #endif
  919. #ifndef PNG_NO_READ_sPLT
  920. #  define PNG_READ_sPLT_SUPPORTED
  921. #  define PNG_sPLT_SUPPORTED
  922. #endif
  923. #ifndef PNG_NO_READ_sRGB
  924. #  define PNG_READ_sRGB_SUPPORTED
  925. #  define PNG_sRGB_SUPPORTED
  926. #endif
  927. #ifndef PNG_NO_READ_tEXt
  928. #  define PNG_READ_tEXt_SUPPORTED
  929. #  define PNG_tEXt_SUPPORTED
  930. #endif
  931. #ifndef PNG_NO_READ_tIME
  932. #  define PNG_READ_tIME_SUPPORTED
  933. #  define PNG_tIME_SUPPORTED
  934. #endif
  935. #ifndef PNG_NO_READ_tRNS
  936. #  define PNG_READ_tRNS_SUPPORTED
  937. #  define PNG_tRNS_SUPPORTED
  938. #endif
  939. #ifndef PNG_NO_READ_zTXt
  940. #  define PNG_READ_zTXt_SUPPORTED
  941. #  define PNG_zTXt_SUPPORTED
  942. #endif
  943. #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
  944. #  define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
  945. #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
  946. #    define PNG_UNKNOWN_CHUNKS_SUPPORTED
  947. #  endif
  948. #  ifndef PNG_NO_HANDLE_AS_UNKNOWN
  949. #    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
  950. #  endif
  951. #endif
  952. #if !defined(PNG_NO_READ_USER_CHUNKS) && \
  953.      defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
  954. #  define PNG_READ_USER_CHUNKS_SUPPORTED
  955. #  define PNG_USER_CHUNKS_SUPPORTED
  956. #  ifdef PNG_NO_READ_UNKNOWN_CHUNKS
  957. #    undef PNG_NO_READ_UNKNOWN_CHUNKS
  958. #  endif
  959. #  ifdef PNG_NO_HANDLE_AS_UNKNOWN
  960. #    undef PNG_NO_HANDLE_AS_UNKNOWN
  961. #  endif
  962. #endif
  963. #ifndef PNG_NO_READ_OPT_PLTE
  964. #  define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
  965. #endif                      /* optional PLTE chunk in RGB and RGBA images */
  966. #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
  967.     defined(PNG_READ_zTXt_SUPPORTED)
  968. #  define PNG_READ_TEXT_SUPPORTED
  969. #  define PNG_TEXT_SUPPORTED
  970. #endif
  971.  
  972. #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
  973.  
  974. #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
  975.  
  976. #ifdef PNG_NO_WRITE_TEXT
  977. #  define PNG_NO_WRITE_iTXt
  978. #  define PNG_NO_WRITE_tEXt
  979. #  define PNG_NO_WRITE_zTXt
  980. #endif
  981. #ifndef PNG_NO_WRITE_bKGD
  982. #  define PNG_WRITE_bKGD_SUPPORTED
  983. #  ifndef PNG_bKGD_SUPPORTED
  984. #    define PNG_bKGD_SUPPORTED
  985. #  endif
  986. #endif
  987. #ifndef PNG_NO_WRITE_cHRM
  988. #  define PNG_WRITE_cHRM_SUPPORTED
  989. #  ifndef PNG_cHRM_SUPPORTED
  990. #    define PNG_cHRM_SUPPORTED
  991. #  endif
  992. #endif
  993. #ifndef PNG_NO_WRITE_gAMA
  994. #  define PNG_WRITE_gAMA_SUPPORTED
  995. #  ifndef PNG_gAMA_SUPPORTED
  996. #    define PNG_gAMA_SUPPORTED
  997. #  endif
  998. #endif
  999. #ifndef PNG_NO_WRITE_hIST
  1000. #  define PNG_WRITE_hIST_SUPPORTED
  1001. #  ifndef PNG_hIST_SUPPORTED
  1002. #    define PNG_hIST_SUPPORTED
  1003. #  endif
  1004. #endif
  1005. #ifndef PNG_NO_WRITE_iCCP
  1006. #  define PNG_WRITE_iCCP_SUPPORTED
  1007. #  ifndef PNG_iCCP_SUPPORTED
  1008. #    define PNG_iCCP_SUPPORTED
  1009. #  endif
  1010. #endif
  1011. #ifndef PNG_NO_WRITE_iTXt
  1012. #  ifndef PNG_WRITE_iTXt_SUPPORTED
  1013. #    define PNG_WRITE_iTXt_SUPPORTED
  1014. #  endif
  1015. #  ifndef PNG_iTXt_SUPPORTED
  1016. #    define PNG_iTXt_SUPPORTED
  1017. #  endif
  1018. #endif
  1019. #ifndef PNG_NO_WRITE_oFFs
  1020. #  define PNG_WRITE_oFFs_SUPPORTED
  1021. #  ifndef PNG_oFFs_SUPPORTED
  1022. #    define PNG_oFFs_SUPPORTED
  1023. #  endif
  1024. #endif
  1025. #ifndef PNG_NO_WRITE_pCAL
  1026. #  define PNG_WRITE_pCAL_SUPPORTED
  1027. #  ifndef PNG_pCAL_SUPPORTED
  1028. #    define PNG_pCAL_SUPPORTED
  1029. #  endif
  1030. #endif
  1031. #ifndef PNG_NO_WRITE_sCAL
  1032. #  define PNG_WRITE_sCAL_SUPPORTED
  1033. #  ifndef PNG_sCAL_SUPPORTED
  1034. #    define PNG_sCAL_SUPPORTED
  1035. #  endif
  1036. #endif
  1037. #ifndef PNG_NO_WRITE_pHYs
  1038. #  define PNG_WRITE_pHYs_SUPPORTED
  1039. #  ifndef PNG_pHYs_SUPPORTED
  1040. #    define PNG_pHYs_SUPPORTED
  1041. #  endif
  1042. #endif
  1043. #ifndef PNG_NO_WRITE_sBIT
  1044. #  define PNG_WRITE_sBIT_SUPPORTED
  1045. #  ifndef PNG_sBIT_SUPPORTED
  1046. #    define PNG_sBIT_SUPPORTED
  1047. #  endif
  1048. #endif
  1049. #ifndef PNG_NO_WRITE_sPLT
  1050. #  define PNG_WRITE_sPLT_SUPPORTED
  1051. #  ifndef PNG_sPLT_SUPPORTED
  1052. #    define PNG_sPLT_SUPPORTED
  1053. #  endif
  1054. #endif
  1055. #ifndef PNG_NO_WRITE_sRGB
  1056. #  define PNG_WRITE_sRGB_SUPPORTED
  1057. #  ifndef PNG_sRGB_SUPPORTED
  1058. #    define PNG_sRGB_SUPPORTED
  1059. #  endif
  1060. #endif
  1061. #ifndef PNG_NO_WRITE_tEXt
  1062. #  define PNG_WRITE_tEXt_SUPPORTED
  1063. #  ifndef PNG_tEXt_SUPPORTED
  1064. #    define PNG_tEXt_SUPPORTED
  1065. #  endif
  1066. #endif
  1067. #ifndef PNG_NO_WRITE_tIME
  1068. #  define PNG_WRITE_tIME_SUPPORTED
  1069. #  ifndef PNG_tIME_SUPPORTED
  1070. #    define PNG_tIME_SUPPORTED
  1071. #  endif
  1072. #endif
  1073. #ifndef PNG_NO_WRITE_tRNS
  1074. #  define PNG_WRITE_tRNS_SUPPORTED
  1075. #  ifndef PNG_tRNS_SUPPORTED
  1076. #    define PNG_tRNS_SUPPORTED
  1077. #  endif
  1078. #endif
  1079. #ifndef PNG_NO_WRITE_zTXt
  1080. #  define PNG_WRITE_zTXt_SUPPORTED
  1081. #  ifndef PNG_zTXt_SUPPORTED
  1082. #    define PNG_zTXt_SUPPORTED
  1083. #  endif
  1084. #endif
  1085. #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
  1086. #  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
  1087. #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
  1088. #    define PNG_UNKNOWN_CHUNKS_SUPPORTED
  1089. #  endif
  1090. #  ifndef PNG_NO_HANDLE_AS_UNKNOWN
  1091. #     ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
  1092. #       define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
  1093. #     endif
  1094. #  endif
  1095. #endif
  1096. #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
  1097.     defined(PNG_WRITE_zTXt_SUPPORTED)
  1098. #  define PNG_WRITE_TEXT_SUPPORTED
  1099. #  ifndef PNG_TEXT_SUPPORTED
  1100. #    define PNG_TEXT_SUPPORTED
  1101. #  endif
  1102. #endif
  1103.  
  1104. #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
  1105.  
  1106. /* Turn this off to disable png_read_png() and
  1107.  * png_write_png() and leave the row_pointers member
  1108.  * out of the info structure.
  1109.  */
  1110. #ifndef PNG_NO_INFO_IMAGE
  1111. #  define PNG_INFO_IMAGE_SUPPORTED
  1112. #endif
  1113.  
  1114. /* need the time information for reading tIME chunks */
  1115. #if defined(PNG_tIME_SUPPORTED)
  1116. #  if !defined(_WIN32_WCE)
  1117.      /* "time.h" functions are not supported on WindowsCE */
  1118. #    include <time.h>
  1119. #  endif
  1120. #endif
  1121.  
  1122. /* Some typedefs to get us started.  These should be safe on most of the
  1123.  * common platforms.  The typedefs should be at least as large as the
  1124.  * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
  1125.  * don't have to be exactly that size.  Some compilers dislike passing
  1126.  * unsigned shorts as function parameters, so you may be better off using
  1127.  * unsigned int for png_uint_16.  Likewise, for 64-bit systems, you may
  1128.  * want to have unsigned int for png_uint_32 instead of unsigned long.
  1129.  */
  1130.  
  1131. typedef unsigned long png_uint_32;
  1132. typedef long png_int_32;
  1133. typedef unsigned short png_uint_16;
  1134. typedef short png_int_16;
  1135. typedef unsigned char png_byte;
  1136.  
  1137. /* This is usually size_t.  It is typedef'ed just in case you need it to
  1138.    change (I'm not sure if you will or not, so I thought I'd be safe) */
  1139. #ifdef PNG_SIZE_T
  1140.    typedef PNG_SIZE_T png_size_t;
  1141. #  define png_sizeof(x) png_convert_size(sizeof(x))
  1142. #else
  1143.    typedef size_t png_size_t;
  1144. #  define png_sizeof(x) sizeof(x)
  1145. #endif
  1146.  
  1147. /* The following is needed for medium model support.  It cannot be in the
  1148.  * PNG_INTERNAL section.  Needs modification for other compilers besides
  1149.  * MSC.  Model independent support declares all arrays and pointers to be
  1150.  * large using the far keyword.  The zlib version used must also support
  1151.  * model independent data.  As of version zlib 1.0.4, the necessary changes
  1152.  * have been made in zlib.  The USE_FAR_KEYWORD define triggers other
  1153.  * changes that are needed. (Tim Wegner)
  1154.  */
  1155.  
  1156. /* Separate compiler dependencies (problem here is that zlib.h always
  1157.    defines FAR. (SJT) */
  1158. #ifdef __BORLANDC__
  1159. #  if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
  1160. #    define LDATA 1
  1161. #  else
  1162. #    define LDATA 0
  1163. #  endif
  1164.    /* GRR:  why is Cygwin in here?  Cygwin is not Borland C... */
  1165. #  if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
  1166. #    define PNG_MAX_MALLOC_64K
  1167. #    if (LDATA != 1)
  1168. #      ifndef FAR
  1169. #        define FAR __far
  1170. #      endif
  1171. #      define USE_FAR_KEYWORD
  1172. #    endif   /* LDATA != 1 */
  1173.      /* Possibly useful for moving data out of default segment.
  1174.       * Uncomment it if you want. Could also define FARDATA as
  1175.       * const if your compiler supports it. (SJT)
  1176. #    define FARDATA FAR
  1177.       */
  1178. #  endif  /* __WIN32__, __FLAT__, __CYGWIN__ */
  1179. #endif   /* __BORLANDC__ */
  1180.  
  1181.  
  1182. /* Suggest testing for specific compiler first before testing for
  1183.  * FAR.  The Watcom compiler defines both __MEDIUM__ and M_I86MM,
  1184.  * making reliance oncertain keywords suspect. (SJT)
  1185.  */
  1186.  
  1187. /* MSC Medium model */
  1188. #if defined(FAR)
  1189. #  if defined(M_I86MM)
  1190. #    define USE_FAR_KEYWORD
  1191. #    define FARDATA FAR
  1192. #    include <dos.h>
  1193. #  endif
  1194. #endif
  1195.  
  1196. /* SJT: default case */
  1197. #ifndef FAR
  1198. #  define FAR
  1199. #endif
  1200.  
  1201. /* At this point FAR is always defined */
  1202. #ifndef FARDATA
  1203. #  define FARDATA
  1204. #endif
  1205.  
  1206. /* Typedef for floating-point numbers that are converted
  1207.    to fixed-point with a multiple of 100,000, e.g., int_gamma */
  1208. typedef png_int_32 png_fixed_point;
  1209.  
  1210. /* Add typedefs for pointers */
  1211. typedef void            FAR * png_voidp;
  1212. typedef png_byte        FAR * png_bytep;
  1213. typedef png_uint_32     FAR * png_uint_32p;
  1214. typedef png_int_32      FAR * png_int_32p;
  1215. typedef png_uint_16     FAR * png_uint_16p;
  1216. typedef png_int_16      FAR * png_int_16p;
  1217. typedef PNG_CONST char  FAR * png_const_charp;
  1218. typedef char            FAR * png_charp;
  1219. typedef png_fixed_point FAR * png_fixed_point_p;
  1220.  
  1221. #ifndef PNG_NO_STDIO
  1222. #if defined(_WIN32_WCE)
  1223. typedef HANDLE                png_FILE_p;
  1224. #else
  1225. typedef FILE                * png_FILE_p;
  1226. #endif
  1227. #endif
  1228.  
  1229. #ifdef PNG_FLOATING_POINT_SUPPORTED
  1230. typedef double          FAR * png_doublep;
  1231. #endif
  1232.  
  1233. /* Pointers to pointers; i.e. arrays */
  1234. typedef png_byte        FAR * FAR * png_bytepp;
  1235. typedef png_uint_32     FAR * FAR * png_uint_32pp;
  1236. typedef png_int_32      FAR * FAR * png_int_32pp;
  1237. typedef png_uint_16     FAR * FAR * png_uint_16pp;
  1238. typedef png_int_16      FAR * FAR * png_int_16pp;
  1239. typedef PNG_CONST char  FAR * FAR * png_const_charpp;
  1240. typedef char            FAR * FAR * png_charpp;
  1241. typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
  1242. #ifdef PNG_FLOATING_POINT_SUPPORTED
  1243. typedef double          FAR * FAR * png_doublepp;
  1244. #endif
  1245.  
  1246. /* Pointers to pointers to pointers; i.e., pointer to array */
  1247. typedef char            FAR * FAR * FAR * png_charppp;
  1248.  
  1249. #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
  1250. /* SPC -  Is this stuff deprecated? */
  1251. /* It'll be removed as of libpng-1.3.0 - GR-P */
  1252. /* libpng typedefs for types in zlib. If zlib changes
  1253.  * or another compression library is used, then change these.
  1254.  * Eliminates need to change all the source files.
  1255.  */
  1256. typedef charf *         png_zcharp;
  1257. typedef charf * FAR *   png_zcharpp;
  1258. typedef z_stream FAR *  png_zstreamp;
  1259. #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
  1260.  
  1261. /*
  1262.  * Define PNG_BUILD_DLL if the module being built is a Windows
  1263.  * LIBPNG DLL.
  1264.  *
  1265.  * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
  1266.  * It is equivalent to Microsoft predefined macro _DLL that is
  1267.  * automatically defined when you compile using the share
  1268.  * version of the CRT (C Run-Time library)
  1269.  *
  1270.  * The cygwin mods make this behavior a little different:
  1271.  * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
  1272.  * Define PNG_STATIC if you are building a static library for use with cygwin,
  1273.  *   -or- if you are building an application that you want to link to the
  1274.  *   static library.
  1275.  * PNG_USE_DLL is defined by default (no user action needed) unless one of
  1276.  *   the other flags is defined.
  1277.  */
  1278.  
  1279. #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
  1280. #  define PNG_DLL
  1281. #endif
  1282. /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
  1283.  * When building a static lib, default to no GLOBAL ARRAYS, but allow
  1284.  * command-line override
  1285.  */
  1286. #if defined(__CYGWIN__)
  1287. #  if !defined(PNG_STATIC)
  1288. #    if defined(PNG_USE_GLOBAL_ARRAYS)
  1289. #      undef PNG_USE_GLOBAL_ARRAYS
  1290. #    endif
  1291. #    if !defined(PNG_USE_LOCAL_ARRAYS)
  1292. #      define PNG_USE_LOCAL_ARRAYS
  1293. #    endif
  1294. #  else
  1295. #    if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
  1296. #      if defined(PNG_USE_GLOBAL_ARRAYS)
  1297. #        undef PNG_USE_GLOBAL_ARRAYS
  1298. #      endif
  1299. #    endif
  1300. #  endif
  1301. #  if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
  1302. #    define PNG_USE_LOCAL_ARRAYS
  1303. #  endif
  1304. #endif
  1305.  
  1306. /* Do not use global arrays (helps with building DLL's)
  1307.  * They are no longer used in libpng itself, since version 1.0.5c,
  1308.  * but might be required for some pre-1.0.5c applications.
  1309.  */
  1310. #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
  1311. #  if defined(PNG_NO_GLOBAL_ARRAYS) || \
  1312.       (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
  1313. #    define PNG_USE_LOCAL_ARRAYS
  1314. #  else
  1315. #    define PNG_USE_GLOBAL_ARRAYS
  1316. #  endif
  1317. #endif
  1318.  
  1319. #if defined(__CYGWIN__)
  1320. #  undef PNGAPI
  1321. #  define PNGAPI __cdecl
  1322. #  undef PNG_IMPEXP
  1323. #  define PNG_IMPEXP
  1324. #endif  
  1325.  
  1326. /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
  1327.  * you may get warnings regarding the linkage of png_zalloc and png_zfree.
  1328.  * Don't ignore those warnings; you must also reset the default calling
  1329.  * convention in your compiler to match your PNGAPI, and you must build
  1330.  * zlib and your applications the same way you build libpng.
  1331.  */
  1332.  
  1333. #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
  1334. #  ifndef PNG_NO_MODULEDEF
  1335. #    define PNG_NO_MODULEDEF
  1336. #  endif
  1337. #endif
  1338.  
  1339. #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
  1340. #  define PNG_IMPEXP
  1341. #endif
  1342.  
  1343. #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
  1344.     (( defined(_Windows) || defined(_WINDOWS) || \
  1345.        defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
  1346.  
  1347. #  ifndef PNGAPI
  1348. #     if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
  1349. #        define PNGAPI __cdecl
  1350. #     else
  1351. #        define PNGAPI _cdecl
  1352. #     endif
  1353. #  endif
  1354.  
  1355. #  if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
  1356.        0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
  1357. #     define PNG_IMPEXP
  1358. #  endif
  1359.  
  1360. #  if !defined(PNG_IMPEXP)
  1361.  
  1362. #     define PNG_EXPORT_TYPE1(type,symbol)  PNG_IMPEXP type PNGAPI symbol
  1363. #     define PNG_EXPORT_TYPE2(type,symbol)  type PNG_IMPEXP PNGAPI symbol
  1364.  
  1365.       /* Borland/Microsoft */
  1366. #     if defined(_MSC_VER) || defined(__BORLANDC__)
  1367. #        if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
  1368. #           define PNG_EXPORT PNG_EXPORT_TYPE1
  1369. #        else
  1370. #           define PNG_EXPORT PNG_EXPORT_TYPE2
  1371. #           if defined(PNG_BUILD_DLL)
  1372. #              define PNG_IMPEXP __export
  1373. #           else
  1374. #              define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
  1375.                                                  VC++ */
  1376. #           endif                             /* Exists in Borland C++ for
  1377.                                                  C++ classes (== huge) */
  1378. #        endif
  1379. #     endif
  1380.  
  1381. #     if !defined(PNG_IMPEXP)
  1382. #        if defined(PNG_BUILD_DLL)
  1383. #           define PNG_IMPEXP __declspec(dllexport)
  1384. #        else
  1385. #           define PNG_IMPEXP __declspec(dllimport)
  1386. #        endif
  1387. #     endif
  1388. #  endif  /* PNG_IMPEXP */
  1389. #else /* !(DLL || non-cygwin WINDOWS) */
  1390. #   if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
  1391. #      ifndef PNGAPI
  1392. #         define PNGAPI _System
  1393. #      endif
  1394. #   else
  1395. #      if 0 /* ... other platforms, with other meanings */
  1396. #      endif
  1397. #   endif
  1398. #endif
  1399.  
  1400. #ifndef PNGAPI
  1401. #  define PNGAPI
  1402. #endif
  1403. #ifndef PNG_IMPEXP
  1404. #  define PNG_IMPEXP
  1405. #endif
  1406.  
  1407. #ifdef PNG_BUILDSYMS
  1408. #  ifndef PNG_EXPORT
  1409. #    define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
  1410. #  endif
  1411. #  ifdef PNG_USE_GLOBAL_ARRAYS
  1412. #    ifndef PNG_EXPORT_VAR
  1413. #      define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
  1414. #    endif
  1415. #  endif
  1416. #endif
  1417.  
  1418. #ifndef PNG_EXPORT
  1419. #  define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
  1420. #endif
  1421.  
  1422. #ifdef PNG_USE_GLOBAL_ARRAYS
  1423. #  ifndef PNG_EXPORT_VAR
  1424. #    define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
  1425. #  endif
  1426. #endif
  1427.  
  1428. /* User may want to use these so they are not in PNG_INTERNAL. Any library
  1429.  * functions that are passed far data must be model independent.
  1430.  */
  1431.  
  1432. #ifndef PNG_ABORT
  1433. #  define PNG_ABORT() abort()
  1434. #endif
  1435.  
  1436. #ifdef PNG_SETJMP_SUPPORTED
  1437. #  define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
  1438. #else
  1439. #  define png_jmpbuf(png_ptr) \
  1440.    (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
  1441. #endif
  1442.  
  1443. #if defined(USE_FAR_KEYWORD)  /* memory model independent fns */
  1444. /* use this to make far-to-near assignments */
  1445. #  define CHECK   1
  1446. #  define NOCHECK 0
  1447. #  define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
  1448. #  define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
  1449. #  define png_snprintf _fsnprintf   /* Added to v 1.2.19 */
  1450. #  define png_strlen  _fstrlen
  1451. #  define png_memcmp  _fmemcmp    /* SJT: added */
  1452. #  define png_memcpy  _fmemcpy
  1453. #  define png_memset  _fmemset
  1454. #else /* use the usual functions */
  1455. #  define CVT_PTR(ptr)         (ptr)
  1456. #  define CVT_PTR_NOCHECK(ptr) (ptr)
  1457. #  ifndef PNG_NO_SNPRINTF
  1458. #    ifdef _MSC_VER
  1459. #      define png_snprintf _snprintf   /* Added to v 1.2.19 */
  1460. #      define png_snprintf2 _snprintf
  1461. #      define png_snprintf6 _snprintf
  1462. #    else
  1463. #      define png_snprintf snprintf   /* Added to v 1.2.19 */
  1464. #      define png_snprintf2 snprintf
  1465. #      define png_snprintf6 snprintf
  1466. #    endif
  1467. #  else
  1468.      /* You don't have or don't want to use snprintf().  Caution: Using
  1469.       * sprintf instead of snprintf exposes your application to accidental
  1470.       * or malevolent buffer overflows.  If you don't have snprintf()
  1471.       * as a general rule you should provide one (you can get one from
  1472.       * Portable OpenSSH). */
  1473. #    define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
  1474. #    define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
  1475. #    define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
  1476.         sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
  1477. #  endif
  1478. #  define png_strlen  strlen
  1479. #  define png_memcmp  memcmp      /* SJT: added */
  1480. #  define png_memcpy  memcpy
  1481. #  define png_memset  memset
  1482. #endif
  1483. /* End of memory model independent support */
  1484.  
  1485. /* Just a little check that someone hasn't tried to define something
  1486.  * contradictory.
  1487.  */
  1488. #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
  1489. #  undef PNG_ZBUF_SIZE
  1490. #  define PNG_ZBUF_SIZE 65536L
  1491. #endif
  1492.  
  1493. /* Added at libpng-1.2.8 */
  1494. #endif /* PNG_VERSION_INFO_ONLY */
  1495.  
  1496. #endif /* PNGCONF_H */
  1497.